Gravity's Rainbow

by Thomas Pynchon

On the day that a 2000 m/sec exhaust became feasible, the A4 itself suddenly came in reach. The danger then lay in being seduced by approaches that were too sophisticated. No one was immune. Hardly a designer there, including Pökler, didn’t come up with at least one monster rig, some Gorgon’s head writhing with pipes, tubes, complicated folderol for controlling pressures, solenoids on top of pilot valves on auxiliary valves on backup valves—hundreds of pages on valve nomenclature were printed as appendices to these weird proposals, all promising huge pressure differences between the inside of the chamber and the nozzle exit—beautiful, as long as you didn’t care much about those millions of moving parts behaving together too reliably. But to get a dependable working motor, one the military could use in the field to kill people, the real engineering problem now was to keep things as simple as possible.